Steam cleansing device for locomotive boilers or the like



Nov. 16 1926.

. Re. 16,471 J. BORE ET AL s'rsu cmunsne DEVICE run LOCOMOTIVB norm-ms on was LIKE Original Filed Jan. 20. 1919 3 Sheets-Sheet 1 IJVVENTORS.

ATTORNEYS Nov. 16 1926.

3 ShQQtB-Shet 2 Original Filed Jan. 20, 1919 mvmrons'.

New. 16 1926.

J. BORE ET AL STBAI CLEANSING DEVICE FOR LOCOIIO'I'IVB BOILERS OR THB LIKB Original Fi led Jan. 20. 1919 3 Sheets-Sheet 5 & A\ vw 11 11 1.

ATTORNEYS I direction.

Reissued Nov. 16, 1926.

UNITED STATES ENT OFFICE. I,

JOHAN BQRE AND ALBERT SKOGLUND, F GOTTENBORG, SWEDEN, ASSIGNORS TO CARL AXEL ARVID WESTEBBEBG, OF STOCKHOLM, SWEDEN.

STEAM CLEANSING DEVICE FOR LOCOMOTIVE BOILERS OR THE LIKE.

' Original No. 1,463,494, dated July 31, 1923, Serial No. 272,076, filed January 20, 1919, and in Sweden April 15, 1918. Application for reissue filed July 22, 1925. Serial No. 45,429.

In marine boilers and sometimes also in stationary boilers the use of steam cleansing or sweeping devices is well known for the cleansing of the tubes, the said devicesprimarily consisting of a steam supply p pe with a discharge nozzle the latter being entered into the fire box or into the. smoke uptake in such a position that the escaping steam may act upon the tubes, either in the direction of the draft, or contrary to such In locomotive boilers where an inclined bridge is generally disposed in front of part ofthe set of tubes the employ ment of such an apparatus is rendered difficult on account of the excessive heat preventing. the apparatus from being entered into the furnaceso faras to keep the steam jet from being obstructed by the bridge. As it is hardly possible for a person to work in front of the boiler when driving the locomotive, the cleansing or sweeping apparatus cannot be brought into the smoke box from the front end of the locomotive. The above circumstances, therefore, always necessitated the sweeping of locomotives to take place at intervals when the engine was not in active operation, this naturally in volving a considerable loss of time, besides which the draft of the locomotive is reduced, particularly when driving over long distances, through the I masses ofgrime which in the meantime gather in the comparatively narrow and long tubes.

The present invention relates to a contrivance by means of which the said-difficulties are overcome so that sweeping may take place at any time during the run of the engine.

The invention is principally characterized bythis that a steam suppl pipe provided with a discharge nozzle is tted in the furnace in such way as toenable the nozzle to be broughtinto the furnace in known manner, also during the run of the loco- -m'otiv e, as might be required, and placed in such a. position by means of manoeuvring devices accessible in the .drivers cab, that the escaping steam will hit the tubes and enter the same, the said discharge nozzle may also be adapted to be brought out of the furnace so far that it is withdrawn from direct contact with the furnace gases.

An embodiment of the invention is shown in the accompanying drawings, in which Fig. 1 shows a vertical longitudinal section of part of the locomotive boiler. Fig. 2 is a vertical cross section of'the same part, and Figs. 3 and 4 respectively represent a horizontal section and an elevation of the part of the boiler shown in Figs. 1 and 2, Figs. 5 and 6, which are drawn to a larger scale, show two horizontal sections of a smaller part of the same boiler fitted with a steam sweeping device, and Fig. 7 is a plan view of the details according to Fig. 6, some of the parts being shown in section.

1 designates the shell plate of the locomotive boiler, the furnace 2 being arranged within it in known manner. The furnace 2 is connected with the smoke box by means of'an upper group of larger tubes 3 and a lower group of smaller tubes 4-. An inclined bridge 5 in known manner prevents the fire from entering the tubes 3, 4 directly. At the one side of the furnace 2 a steam discharge or supply pipe 6 is inserted through a nipple or stay tube 7 passing through the water-leg formed adjacent the side of the furnace by the walls 1 and 2, the

said nipple 7 being fitted. water tight to the plates 1 and 2. The steam supply pipe 6. is rotatably and slidably mounted in'a casing 16 secured to the plate 1, the said casin being provided with a chamber 25 supplied with steam from the boiler through a pipe'9; The chamber 25 communicates with the interior ofthe pipe 6 through apertures or ports 26 in the latter when the pipe '6 occupies the position shown in Fig. 6. At the end adjacent to the furnacethe steam supply-pipe 6 is fitted with a dis- :charge nozzle, 11 provided with a blowthrough-channel 12 which in known way is shaped so as to give the escaping steam a flattened out fan-like spreading. .The nozzle-pipe 6 and thefnipple 7 are horizontally mounted in the water-leg in a position about midway between the front part of the fire this osition the axis of the concentric nozzle-pipe and the nipple is included in a plane normal to the longitudinal axes of the tubular fines 3 and 4. hen the nozzlepipe is projected in this plane into the firebox and is rotated, the fan-like jet of steam emitted from the nozzle sweeps the terminals of the tubular fines. The nozzle pipe 6 is provided with a manoeuvring contrivance S reaching into the drivers cab 10. The said manoeuvrin contrivance according to the embodiment s own partly consists of a lever 13 engaging a pin 15 with its forked end, the pin 15 passing through thepart which is outside of the easot the pipe 0 iug 16. The free end 21 of the pin 15 is provided with a slot, this slot being entered by a stud 27, on an arm 20. The arm is rig-id, with a rod 19 which is mounted on the rod 13 by means of screws 23 so that the rod 19 and the rod 13 together form a part of the manoeuvring contrivance 8. The screws 23 are adapted to pass through slots 24; provided in the rod 19, so that the latter may be moved relatively to the rod 13. The rod 19 is extended through the wall 10 and turned to form a handle 22 on the inside of the said wall 10.

The operation of the apparatus is as follows:

hen sweeping is to be done the steam supply pipe 6 is entered into the furnace by means of the rod 13, this rod .being adapted to swing in the manner of a lever fulcrnmed in the wall of the drivers cab. This being done, the ports of the pipe 6 are brought within the chamber 25 on the casing 16 communicating with the pipe 9 so as to cause the steam to be discharged throughthe channel 12 of the nozzle 11 against the tubes, as is diagrammatically shown by full lines in Fig. 1. Through the manipulation of the handle 22 the pin 15, 21 and the pipe 6 may be turned front within the drivers cab by sliding the rod 19, 20 to and fro so that the steam jet will sweep over all of the tubes 3 and 4 in turn, or only over part of them, as may be desired. The sweeping having been done, the pipe 6 is drawn in so far within the nipple 7, by swinging of the rod 13,- that the edge 17 of a cap enclos ing the nozzle 11. will abut against a sleeve 18 projecting from the casing 16 into the nipple 7. By this withdrawal of the pipe 6 3 with its discharge nozzle 11 these parts are protected against any damage from the fire and the hot gases in the furnace. Through the withdrawal of the nipple 6 within the pipe 7 the ports 26 will be moved out of range of the chamber 25 (see Fig. 5) and the supply of steam is hereby discontinued without a separate shut-off valve be manipulated.

By means of the manoeuvring contrivauce 8'formed by the rods 13 and 19 the whole apparatus'may be easily and conveniently operated, and all of the tubes, or only a having to part thereof, may be swept over by the steam jet by turning the apparatus through an angle less than 180.

The turning movement of the discharge pipe 6 is limited by the play of the pins or screws 23 in the slots 2% of the control rods 13 and19. As the reciprocative movement of the rod 19 on the rod 13 is limited, so the oscillative movement imparted by the arm 20 to the pin 15 and discharge pipe 6 is likewise limited. In this way the oscillation of the discharge pipe and its nozzle will be restricted so to confine the sweeping effectof the steam jet to area occupied by the -.ends of the tubes opening through the furnace wall.

The device shown in the drawings and de scribed hereinbefore evidently only repre sents an embodiment of the invention which may be modified in its details without departing from the spirit or the. scope of the invention. Thus, for instance the apparatus may be disposed vertically or it may be entered obliquely throughv the top of the furnace instead of being inserted from the side thereof; the discharge nozzle may be differently shaped, and the manipulation of the apparatus may be effected otherwise and by other means than hercinbefore described,

provided the characteristic nature of the apparatus is such, that it may, when acted upon from within the drlvers cab, also during the run of the locomotive, send the steam jet against the whole of the set of tubes, or only against a part thereof, so as to force the grimeout of the tubes.

Claims 1. A; locomotive having a cab at its rear end, afurnace having a side wall, and a boiler having a set of tubes extending lengthwise from the furnace, a tubular nipple-extended through the wall at a-point exte'rior of the cab with its axis in a plane extending across the axes of the tubes and a steam discharge pipe slidably and rotatably arranged within the nipple, said pipe having a nozzle, and means operable from the cab for turning the nozzle and sliding it transversely of-the'anes of the tubes for direct-ing'the steam into said tubes from said nozzle.

2 A locomotive having a cab, a furnace with a side wall, and boiler tubes leading from the furnace, a tubular nipple with its- 'itXlS in a plane extending transversely of the axes of the tubes and extending through the side wall. at a point exterior of the cab,

a steam discharge pipe having hole through its wall, said pipebeing slid-ably and rotatably arranged within the nipple,

said-nipple having therein a steamchamber, a steam pipe leading'to said chamber, and means extending to the cab whereby said first mentioned pipe may be moved by a person in the cab lengthwise to bring-the hole in the pipe into communication with the steam chamber and the pipe oscillated as described. a

v 3. In a locomotive provided with a cab, a furnace having a side Wall and a boiler having a battery of tubes leading from the furnace, a tubular nipple in said'wall at a point exterior of the cab and a steam discharge. pipe rotatably arranged within the nipple and slidable therein in a plane extending transversely to the axes of the tubes, said discharge pipe having a nozzle flared to effect a spreading of the steam jet in the shape of a fan, part ofthe jet being directed at right angles to the axis of the discharge pipe and part at acute angles thereto, means for operating the pipe extending to the cab whereby,by small lengthwise and oscillating movement of the nozzle through said means by a person in the cab, steam may be projected into'the ends of said tubes. v

' 4. A locomotive having a cab, a furnace with a side water wall and a boiler having tubes leading from the furnace, a tubular nipple with its axis arranged transversely through the said side water wall at a point exterior of the cab and with its axis in a plane normal to the axes of said tubes, a steam discharge pipe slidably androtatably mounted within the nipple, a nozzle on the end ofthe discharge pipe flared to effect a fan-like spreading of cleaning steam, and

means operable from the cab for effecting the sliding and rotating of the discharge pipe.

5. 'A locomotive having a cab, a furnace and a boiler with tubes extending from. the furnace through the boiler, said boiler having water-legs adjacent the opposite sides of the furnace, fire bridge extending across the fire box of the furnace between the Water-legs of the boiler, a tubular nipple mounted transversely of one of the waterlegs at a point between the terminals of the tubes and the fire bridge, a steam discharge pipe rotatable and slidable in the nipple, a nozzle on the inner end of the discharge pipe and provided with a flared outlet to spread the steam emitted therefrom into a fan-like jet, and means controllable in the cab for efiecting the sliding and rotating of the discharge pipe in the nipple to project the nozzle into the fire box and to rotate the same to sweep the jet across the terminals of the tubes extending from the furnace through the boiler. I

6. In an apparatus of the character described, the combination with a locomotive boiler having side water walls, a furnace within the boiler and tubes leading from the furnace, of a tubular nipple arranged'transversely through one of the said side water walls at a point exterior of the cab and with its axis in a plane normal to the axes of the tubes, a steam discharge pipe slidably and rotatably mounted within the nipple, a nozzle on the end of the discharge pipe flared to effect a fan-like spreading of exhausting steam, and means connected with the opposite end of the discharge pipe and leading into the drivers cab for sliding and rotating the discharge pipe.

7. An apparatus of the character described including in combination, a boiler, a furnace therein, boiler tubes leading from the furnace, a nipple arranged through the Walls of the furnace and boiler and having its axis in a plane at right angles to the longitudinal axes of the tubes, said nipple being positioned in said walls at a point exterior of the cab, a casing in the nipple, a discharge pipe slidably and rotatably arranged through the casing and the nipple and coacting with the casing to form a valve for controlling the passage of steam into the furnace, a nozzle on the inner end of the discharge pipe, and. means operable from the cab for sliding and rotating the discharge pipe.

8. An apparatus of the character described including in combination, a boiler, a furnace arranged therein, tubes leading from the furnace, a bridge in thefurnace, a nipple arranged throughthe walls of the furnace and'boiler and positioned above the bridge and having its axis at approximately right I angles to thezlongitudinal axes of the tubes,

a casing in the nipple, a discharge pipe slidably and rotatably arranged through the casing and coact-ing with the casing to form a valve for controlling the passage of steam into the furnace, a nozzle on the inner end of the discharge pipe, and means arranged Within convenient reach of the operator or driver for manipulating the discharge pipe.

9. In a locomotive, a cab, a furnace having a side wall, a boiler having a battery of tubes leading from the furnace, a tubular nipple in said wall at a point exterior to the cab and with its axis in a plane normal to the axes of said tubes and a steam discharge pipe rotatably arranged within the nipple, said pipe having a laterally discharging nozzle to project a jet of steam principally at right angles to the axis of the discharge pipe, a rod for operating the pipe extending to the cab whereby by a movement of the rod by a person in the cab, the Pipe may be rotated to project steam into the ends of said tubes.

10. A locomotive having a cab, a furnace with a side wall and a boiler having tubes leading from the furnace, a tubular nipple mounted in the side wall at a point exterior of the cab and with its axis arranged in a plane extending transversely to the axes of the tubes, and at a point in the wall slightly removed from the terminals of the tubes, a steam discharge pipe slidably mounted within the nipple, a nozzle on the end of the discontrolled from the cab for effecting the sliding of the pipe and for the rotating of i the nozzle.

11. An apparatus .of the character. described, including in combination, a boiler, a furnace therein, boiler tubes leading from the furnace, a nipple arranged through the walls of the furnace and boiler at a point exterior of the cab and having its axis normal to the longitudinal axes in a plane of the tubes, a casing in the nipple, a. discharge pipe movable endwise through the casing and the nipple, and coact-ing with the casing to allow the passage of steam into the furnace when the discharge pipe moved .end

wise into the furnace, a nozzle on the discharge pipe, and means controlled in the cab for rotating the nozzle ,to project steam into the ends of said tubes.

12. A locomotive having a cab, a furnace with a side wall, and boiler tubes leadingfrom the furnace. a tubular nipple mounted in the side wall at a point exterior of the cab and with its axis arranged in a plane extending transversely of the axes of the tubes, a steam discharge pine having a nozzle and also a port through its wall, .said discharge pipe being rotatably arranged within the nipple, said nipple having therein a. steam chamber, a steam pipe leading-to said chamber, and means extending to the cab whereby said discharge pipe may be moved by a person in the cab lengthwise to bring the port in the pipe into communication with the steam chamber and the nozzle oscillated to project steam into the ends of the tubes. 7

13. A locomotive having a furnace and a boiler with tubes extending from the furnace through the boiler, said boiler having a water-leg adjacent to a side of the furnace, a tubular nipple mounted transversely of the water-leg with its axis in a plane normal to the axes of the tubes, a nozzle mounted in the nipple to slide and to rotate therein, a steam discharge pipe mounted in the nipple and communicating with the nozzle, and means controllable at a distant point for sliding and rotating the nozzle in the nipple to nroject the nozzle into the furnace to sweep the steam jet across the terminals of the tubes extendin from the forms e through the boiler.

14. A locomotive having a furnace and a ,boiler with tubes extending. from the furnace through the boiler, said boiler having water-legs adjacent the opposite sides of the furnace, a fire bridge extending across the fire box of the furnace between the waterlegs ,of the boiler, a tubular nipple mounted transversely of one of the Water-legs at a point between the fire bridge and the terminals of the tubes, a nozzle mounted in the nipple to slide and to rotate therein, a steam discharge pipe mounted in the nipple and communicating with the nozzle, and means controlled at a distant point for sliding and rotating the nozzle in the nipple to project the nozzle into the furnace to the rear of v the fire bridge to sweep the steam jet across the terminals of the tubes extending from the furnace through the boiler.

In testimony whereof We aflix our tures.

JOHAN BORE. ALBERT SKOGLUND.

signa- 

